Yield and Quality Characteristics of Lettuce Lines Developed by Mutation Breeding
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Date
2025-12-31
Journal Title
Journal ISSN
Volume Title
Publisher
Yuzuncu Yil University
Abstract
In this study, we aimed to create genetic variation through physical
mutagen application to lettuce (Lactuca sativa var. longifolia), a vegetable species
whose leaves are consumed fresh, to obtain new varieties rich in nutritional
content that can create market demand from this gene pool. Cervantes and Escule
lettuce seeds were irradiated with effective mutation doses determined specific to
the variety using a Cobalt-60 gamma ray source. Selection and inbreeding studies
were performed for 4 generations, and 36 mutant lines were selected from the lines
at the M4 stage to be used in subsequent experiments. Height, diameter, weight,
leaf color, water-soluble dry matter (WSDM), chlorophyll, total carotenoid,
vitamin C, lutein and total phenolic content of lettuce heads were examined in 36
mutant lines selected and in 4 commercial control varieties. The differences
between the data obtained were statistically significant. Mutant lines numbered
62, 66, 71, 72, 74, 77, 84, and 100 which were found to be superior in terms of
both morphological characteristics and nutritional content, were selected for
inclusion in yield trials as a variety of candidates. These findings represent a
significant step in increasing genetic diversity in agricultural production and
developing lettuce varieties with higher yield and nutritional value.
Description
Keywords
Gamma ray, Lactuca sativa L., Lutein, Mutation, Vitamin C